US4368766A - Self-cooling water container - Google Patents

Self-cooling water container Download PDF

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Publication number
US4368766A
US4368766A US06/220,171 US22017180A US4368766A US 4368766 A US4368766 A US 4368766A US 22017180 A US22017180 A US 22017180A US 4368766 A US4368766 A US 4368766A
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Prior art keywords
water
container
porous
water container
self
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Expired - Lifetime
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US06/220,171
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English (en)
Inventor
Haruo Nomi
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Junkosha Co Ltd
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Junkosha Co Ltd
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Assigned to JUNKOSHA CO. LTD., A CORP. OF reassignment JUNKOSHA CO. LTD., A CORP. OF ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NOMI, HARUO
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient

Definitions

  • This invention relates to a self-cooling water container capable of keeping the temperature of the contained water lower than the ambient temperature by utilizing the heat of water vaporization
  • water In dry, hot regions such as the Arabian peninsula, water is supplied for drinking purposes after storing it in a porous ceramic pot or a canteen made of leather or cloth.
  • the stored water is cooled lower than the ambient temperature by utilizing the self-cooling ability of the container.
  • the water soaks the wall and gradually exudes out to the outer surface of the container.
  • the exuded water is then vaporized taking the heat, through the vaporization process, from the contained water to reduce the stored water temperature to a point lower than the outside temperature.
  • the purpose of the present invention is to provide a self-cooling water container utilizing the heat of vaporization to reduce the interior water temperature to a point lower than the exterior temperature, while overcoming many disadvantages of conventional water containers.
  • the container is resistant to tearing and ripping, lightweight, non water-absorbent, flexible so that it can be folded compactly, and convenient to carry due to the dry outside surface.
  • the container if necessary, can be maintained in a specified, three-dimensional shape by using a perforated backing material such as metal net, punched metal sheet, etc.
  • the preferred interior surface is a smooth, water repellent, continuously porous material and will not allow any adhesion of contaminants, while at the same time allowing for perfect cleaning and sterilization.
  • the water container of the present invention is comprised of a water repellent, continuously porous material, or a gas permeable laminate including said porous material as a major ply element.
  • the resin to be used to produce the water repellent, continuously porous material includes various fluorocarbon resins (most preferably polytetrafluoroethylene), polyester, polyethylene, etc. These resins are made into a porous structure having maximum pore size in the range of 0.1-50 microns by conventional methods.
  • FIG. 1 is a cross sectional view of an example of a water container embodying the present invention.
  • FIG. 2 through 4 show portions of the cross sections of three water containers of the present invention, each made using a laminate of different construction.
  • FIG. 5 is a schematic sectional view of the container wall and serves to explain the vaporization process.
  • numeral 1 indicates the water-repellent, continuously porous resin material
  • numeral 2 indicates the place of bonding
  • numeral 3 is the mouth of the container
  • numeral 4 is the cap
  • numeral 5 is the gas permeable layer laminated to the porous material.
  • FIG. 1 shows an embodiment of the present invention in which two pieces of water repellent, continuously porous resin sheets 1 are water-tightly bonded together around the periphery 2 by adhesion, fusion bonding or sewing to form a water containing bag.
  • the mouth 3 of the bag is attached by adhesion or fusion bonding, and the cap 4 screws onto the mouth 3.
  • FIG. 2 shows another embodiment of the present invention in which a laminate of said porous material 1 and a gas permeable material 5 (e.g. synthetic cloth) is used as sheet material for reinforcement and decoration, with the material 5 on the outside.
  • a gas permeable material 5 e.g. synthetic cloth
  • FIG. 3 is still another embodiment of the present invention in which the laminate of FIG. 2 is used with the material 5 being located on the inside of the container.
  • FIG. 4 is still another example in which a three layered laminate having the gas permeable material 5 on both the front and back surface of the porous material is used.
  • the container layer I is made of the water repellent, continuously porous material
  • the water W in the container does not soak into the wall 1 and ooze through to the outside as in containers made of unglazed pottery, leather and cloth.
  • the contained water W vaporizes on the contact surface between the porous wall 1 and the water W, or on the contact surface between the porous wall 1 and the gas permeable layer 5 which is in direct contact with the water.
  • the water vapor W' easily passes through the continuous fine pores in the porous wall 1 and the gas permeable layer 5 to the outside if the gas permeable layer 5 is laminated to the porous wall 1.
  • the heat utilized in the process of water vaporization on the surface absorbs the heat contained in the water W inside the container.
  • the water temperature inside the container is kept lower than the ambient temperature.
  • the water container of the present invention is made of the water repellent, continuously porous, resin material mentioned above, or of a gas permeable laminate including said material as a primary layer.
  • the laminate is obtained by laminating gas permeable fabric(s) onto the front and/or back surface(s), for the purpose of reinforcement and decoration, in a manner so as not to lower the gas permeability (i.e. lamination via powdered, dotted or patterned adhesion or fusion).
  • Metal net or a punched metal sheet may be included between the porous material or as a member of the laminate for the purpose of reinforcement or support so as to keep the shape of the container.
  • lubricated PTFE a mixture of PTFE fine powder with a liquid lubricant, e.g., solvent naphtha, whiteoil, etc., in the weight ratio of ca.
  • a continuously porous PTFE shaped article having a micro structure of nodes interconnected by fibrils with innumerable fine pores between the nodes and fibrils, is obtained.
  • the EPTFE thus obtained may be used as an unsintered product when subjected to a heat setting below 327° C. or as a sintered product when subjected to heating above 327° C.
  • the physical properties of the expanded porous PTFE can be optionally varied in a wide range as follows:
  • Maximum pore size 0.1-50 microns, preferably less than 5
  • Matrix tensile strength 514 kg/cm 2 or more
  • Thickness 0.01 mm or more
  • the EPTFE is very flexible and has excellent surface smoothness, water repellency (water permeability: 0-1 cm 3 /min.dm 2 . /mag, and heat and chemical resistance, etc.)
  • Another method of forming the water container of this invention may be by drawing or shaping the porous, water repellent material into the desired form under application of heat and pressure.
  • a commercial laminate, trademarked Gore-Tex® fabric (which is made of a continuously porous PTFE film 1 and two sheets of nylon taffeta 5 laminated to both faces of said film), was cut into two pieces of the desired shape. These pieces were overlapped together, and the nylon taffetas on the periphery of the overlapped pieces were bonded together water-tightly as shown in FIG. 4, where numeral 2 indicates the bonded portion around the periphery, by using a high-frequency welder, thus producing a water container.
  • the water container so produced was filled with ca. 0.7 liters of water, and hung in the shade outdoors on a fine, summer day.
  • a commercially available aluminum canteen was filled with water and was conditioned outdoors, simultaneously with the container of the present invention. Water temperatures in the containers. were measured after one hour, and the results are listed below:
  • a water container was produced by using the same material and process as in Example 1 with the exception that a polyester based adhesive was used in the bonding process instead of the high frequency welder.
  • the container filled with water was hung in a room for an hour, and the water temperature was measured.
  • a wet-bulb thermometer and an aluminum canteen filled with water were also put beside the container, and the water temperatures of these were measured.
  • the measurement results were as follows:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
US06/220,171 1979-12-24 1980-12-23 Self-cooling water container Expired - Lifetime US4368766A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1979179005U JPS6229901Y2 (en]) 1979-12-24 1979-12-24
JP54-179005[U] 1979-12-24

Publications (1)

Publication Number Publication Date
US4368766A true US4368766A (en) 1983-01-18

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US06/220,171 Expired - Lifetime US4368766A (en) 1979-12-24 1980-12-23 Self-cooling water container

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JP (1) JPS6229901Y2 (en])

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993004948A1 (en) * 1991-09-04 1993-03-18 Weyerhaeuser Company A package for perishable food and horticultural products
US20020113101A1 (en) * 2000-09-01 2002-08-22 Jeff Skillern Hydration pouch with integral thermal medium
US20030000907A1 (en) * 1997-09-19 2003-01-02 Gregory Kevorkian Vented beverage container
US20040007553A1 (en) * 1997-09-19 2004-01-15 Smolko Daniel D. Pervaporatively cooled containers
WO2003102480A3 (en) * 2002-06-03 2004-04-15 Advanced Porous Tech Llc Pervaporatively cooled containers
US6722533B2 (en) 2002-02-26 2004-04-20 Jeff Skillern Hydration pouch with detachable hose
US20040173556A1 (en) * 1997-09-19 2004-09-09 Smolko Daniel D. Vented closures for containers
US20060019047A1 (en) * 2004-07-26 2006-01-26 Serena Giori Self-Cooling Beverage Container With Permeable Wall
US20060182372A1 (en) * 2005-02-11 2006-08-17 Fadal Robert E Ii Collapsible containers with exchangeable liners
US20060201186A1 (en) * 1997-09-19 2006-09-14 Smolko Daniel D Cooling tubes and straws for liquids
RU2291361C2 (ru) * 2002-06-03 2007-01-10 Эдвансед Порес Текнолоджиз, Ллс Контейнеры, охлаждаемые за счет диффузионного испарения
KR100768072B1 (ko) * 2002-06-03 2007-10-18 어드밴스드 포러스 테크놀로지, 엘엘시 투과증발식 냉각용기
US20090277141A1 (en) * 2008-05-12 2009-11-12 Nitto Denko Corporation Porous polytetrafluoroethylene membrane and method of producing the same, and filter medium
US20110272408A1 (en) * 2010-02-08 2011-11-10 Becker Underwood, Inc. Method and devices for improved oxygen permeability in microorganism storage containers
US8956046B2 (en) * 2010-11-22 2015-02-17 Hosokawa Yoko Co., Ltd. Bag with port member and connection structure thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467792A (en) * 1945-04-23 1949-04-19 Fred H Wenzel Self-cooling water bag
US3082611A (en) * 1960-07-08 1963-03-26 Ling Temco Vought Inc Protective means
US3367380A (en) * 1964-03-05 1968-02-06 Dev Consultants Inc Collapsible container
US3953566A (en) * 1970-05-21 1976-04-27 W. L. Gore & Associates, Inc. Process for producing porous products
US4063383A (en) * 1975-04-18 1977-12-20 H. J. Heinz Company Limited Production of mushroom spawn
US4132594A (en) * 1976-06-28 1979-01-02 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Gas diffusion liquid storage bag and method of use for storing blood

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467792A (en) * 1945-04-23 1949-04-19 Fred H Wenzel Self-cooling water bag
US3082611A (en) * 1960-07-08 1963-03-26 Ling Temco Vought Inc Protective means
US3367380A (en) * 1964-03-05 1968-02-06 Dev Consultants Inc Collapsible container
US3953566A (en) * 1970-05-21 1976-04-27 W. L. Gore & Associates, Inc. Process for producing porous products
US4063383A (en) * 1975-04-18 1977-12-20 H. J. Heinz Company Limited Production of mushroom spawn
US4132594A (en) * 1976-06-28 1979-01-02 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Gas diffusion liquid storage bag and method of use for storing blood

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Expanded Teflon TFE Opens New Range of Applications", The Journal of Teflon, Oct./Nov. 1971. *

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993004948A1 (en) * 1991-09-04 1993-03-18 Weyerhaeuser Company A package for perishable food and horticultural products
US20040173556A1 (en) * 1997-09-19 2004-09-09 Smolko Daniel D. Vented closures for containers
US20060201186A1 (en) * 1997-09-19 2006-09-14 Smolko Daniel D Cooling tubes and straws for liquids
US20040007553A1 (en) * 1997-09-19 2004-01-15 Smolko Daniel D. Pervaporatively cooled containers
US20060248910A1 (en) * 1997-09-19 2006-11-09 Smolko Daniel D Self-cooling container for liquids
US7107783B2 (en) * 1997-09-19 2006-09-19 Advanced Porcus Technologies, Llc Self-cooling containers for liquids
US20030000907A1 (en) * 1997-09-19 2003-01-02 Gregory Kevorkian Vented beverage container
US20050263480A1 (en) * 1997-09-19 2005-12-01 Advanced Porous Technologies, Llc Vented closures for containers
US20050263479A1 (en) * 1997-09-19 2005-12-01 Advanced Porous Technologies, Llc Vented closures for containers
US7475560B2 (en) * 1997-09-19 2009-01-13 Advanced Porous Technologies, Llc Cooling tubes and straws for liquids
US20020113101A1 (en) * 2000-09-01 2002-08-22 Jeff Skillern Hydration pouch with integral thermal medium
US6722533B2 (en) 2002-02-26 2004-04-20 Jeff Skillern Hydration pouch with detachable hose
KR100768072B1 (ko) * 2002-06-03 2007-10-18 어드밴스드 포러스 테크놀로지, 엘엘시 투과증발식 냉각용기
RU2291361C2 (ru) * 2002-06-03 2007-01-10 Эдвансед Порес Текнолоджиз, Ллс Контейнеры, охлаждаемые за счет диффузионного испарения
WO2003102480A3 (en) * 2002-06-03 2004-04-15 Advanced Porous Tech Llc Pervaporatively cooled containers
WO2006014815A3 (en) * 2004-07-26 2006-12-21 Serena Giori Self-cooling beverage container with permeable wall
US7344767B2 (en) * 2004-07-26 2008-03-18 Serena Giori Self-cooling beverage container with permeable wall
US20060019047A1 (en) * 2004-07-26 2006-01-26 Serena Giori Self-Cooling Beverage Container With Permeable Wall
AU2005269621B2 (en) * 2004-07-26 2009-11-05 Claudio Giori Self-cooling beverage container with permeable wall
US20060182372A1 (en) * 2005-02-11 2006-08-17 Fadal Robert E Ii Collapsible containers with exchangeable liners
US20090277141A1 (en) * 2008-05-12 2009-11-12 Nitto Denko Corporation Porous polytetrafluoroethylene membrane and method of producing the same, and filter medium
US8123839B2 (en) * 2008-05-12 2012-02-28 Nitto Denko Corporation Porous polytetrafluoroethylene membrane and method of producing the same, and filter medium
US20110272408A1 (en) * 2010-02-08 2011-11-10 Becker Underwood, Inc. Method and devices for improved oxygen permeability in microorganism storage containers
AU2011213655B2 (en) * 2010-02-08 2016-03-03 Becker-Underwood, Inc. Methods and devices for improved oxygen permeability in microorganism storage container
US9340766B2 (en) * 2010-02-08 2016-05-17 Basf Corporation Method and devices for improved oxygen permeability in microorganism storage containers
EP2534239B1 (en) * 2010-02-08 2020-11-04 BASF Corporation Devices for improved oxygen permeability in microorganism storage container
EP3792339A3 (en) * 2010-02-08 2021-03-24 BASF Corporation Devices for improved oxygen permeability in microorganism storage container
US8956046B2 (en) * 2010-11-22 2015-02-17 Hosokawa Yoko Co., Ltd. Bag with port member and connection structure thereof

Also Published As

Publication number Publication date
JPS6229901Y2 (en]) 1987-07-31
JPS5696272U (en]) 1981-07-30

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